Get ye to Windows Update, because there’s a good chance you’ve got new Secure Boot certificates to install. Microsoft just announced that it will be refreshing those certificates, which were originally introduced when Secure Boot debuted in 2011, as a security precaution. Secure Boot was a way for Microsoft to protect systems from running unsigned and potentially malicious code before Windows launched. It went on to be an installation requirement for Windows 11, as well as anti-cheat software used in Valorant, Call of Duty: Black Ops 6/7 and Battlefield 6.
Without the new Secure Boot certificates, Microsoft says your system will still function normally, but it will enter “a degraded
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